820252938 has 16 divisors (see below), whose sum is σ = 1649097216. Its totient is φ = 271985760.

The previous prime is 820252919. The next prime is 820252969. The reversal of 820252938 is 839252028.

It is a junction number, because it is equal to n+sod(n) for n = 820252896 and 820252905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356731 + ... + 359022.

It is an arithmetic number, because the mean of its divisors is an integer number (103068576).

Almost surely, 2^820252938 is an apocalyptic number.

820252938 is an abundant number, since it is smaller than the sum of its proper divisors (828844278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820252938 is a wasteful number, since it uses less digits than its factorization.

820252938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715949.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 820252938 is about 28640.0582750804. The cubic root of 820252938 is about 936.0863912334.

The spelling of 820252938 in words is "eight hundred twenty million, two hundred fifty-two thousand, nine hundred thirty-eight".